Bicycle-tire valve.



no. 634,752; Ptenfed OGL |o, rl899. Y n. HonoLn. Y

BIYCLE -TIBE VALVE.

(Appxiwm med m. 2s, was.)

(No lodo.)

&

wml/VMM 1 f o( 9 MM THE NOHRIS FVTRS CD., PHOYMITHO., WbiNINGTN, D. C.

Y willrender `leakageofthe compressed air tion, and combination ofparts, which will y through the tire and Vwheel-rim.

in cross-section and threaded, as shown, to re- .valve which willV beexceedingly lsim ple in con- 'openings in the tire and Wheel-rim in awell- UN-frrnne STATES- vlrrinwr Creme;

' 'ROBERT noNoLD, orsruTTcART, GERMANY;

BioYcLE-TliRiEf VALVE.

sPEcIrroA'rIoN fermingpart of ttter'sratent No. 634,752, dated october1o, 1899. l i imitation emanati zafisse.' stanno. 675,145. (Nomoaei.)

T0' @Zlwhom it mayconcerne Be it known that I, ROBERT HoNoLD, a citizenof the Kingdom of Wrtemberg,vresiding at Militarstrasse No. 6,Stuttgart, Kingdom of Wrtemberg, Germany, have invented cer-4 tain newand useful Improvements in Valves for Pneumatic Tires; and I do herebydeclare the following to beafull, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same. i o

My invention Vrelates to improvements in valves, and particularly to avalve especially adaptedV for use in connection with pneumatic tires forbicycles andthe like.

The object of my inventioh is to providea struction and durable andvwhich in addition through the valve practically impossible;

A further object of my invention is to provide means by which the usualdust-cap will be removably held in place in a firmer manner than usual.Y

With these objects in view my invention consists in the features,details of construcrst be described in connection with the accompanyingdrawings-and then particularly pointed out. in the claim.

The drawln g 1s a sectional view taken lon tudinally through the valveand transversely Referring to the drawing, B 1s a valve-cas-y ing havinga flange b at its inner end and a slightly-conical contracted opening atits ou ter end, the said contracted opening being connected with thelarger'inner diameter of the valve-casing'by means of an interiorconicalv valve-seat, the purpose of which will be hereinafter pointedout. y

The exterior of the valve-casing is circular ceive an inner nut C and anouter nut E.

The `said valve-casing is inserted through known manner, the tire andwheel-rim being clamped firmly by screwing up the inner and outer nuts CandE, a collar I)A being inserted between the tire and'the inner collarC in order to compress the elastic tire firmly around the val ve-casing,and thereby prevent leakage around the ,valve-casing.

Within the valve-casing is placed a metal ball-valve A, preferably ofsteel, which is of such a diameter that it will fit airtight into theconed portion or valve-seat, being normally held in this position whenthe tire is y inflated bythe pressure of the air in the tire and beinglifted from its seat back into the larger diameterof the interior of thevalvecasing when the pump which is used to inflate the tire is drivingthe air inward to the tire.

The outer end of the valve-casing is somewhat reduced in diameter andscrew-threaded to receive the pump connection and, also to receive adust-cap F. This. dust-cap has a centrally-arranged plug projectinginward and arranged to enter a substantial distance into the outerreduced end of the valve-casing, the said projecting end of the plugbeing slightly coned, as shown at G, in order to 't air-*tight intotheouter end of the casing.

lied upon only during the time that thepump is in use to innate thetire. When this has been done, the dust-cap is screwed in place, and itsconed plug serves as an additional 'valve to close the outer end of thetire, so that even if the ball-valve lshould be inclined to lleak fromany cause no air can escape from the valve. llioreover, since thedust-cap is held against unscrewing not only by the friction of itsscrew-threads, -but also by the fricdentally unscrewingis reduced to aminimum.

In order to prevent the ball-valve from es-` capingffrom the casingatvthe inner end of the casing, a stop device or transverse bar h isprovided at such inner end.

I am aware that it is old to construct aire IOO but my invention differsfrom these contion of the plugin the outer end of the valve# casing,thedanger'of the said dust-capacciy being forced out by the pressure ofthe air in the tire if the ball-valve should accidentally becomeunseated.

It is common to construct air-valves of this general type; but one ot'the disadvantages of the same has been that the dust-cap frequentlyworks loose simply from the motion the device receives in use, andparticularly when the bicycle or other vehicle is subjected to excessivejolting or shocks in traveling over rough or uneven road-beds. In thelatter case the valve-casing is subjected to eX- cessive vibration, andconsequently the dustcap-tends to unscrew from 'the end of the casing towhich it is attached. In order to overcome this tendency, I preferablyconstruct the coned plug-valve with the end ot' the same even orsubstantially flush with the open end of the screw-cap, so that thesides of the valve-casing are clamped or received snugly all aroundbetween the said plugvalve and the inner sides of the cap, as Well asfor an equal distance longitudinally of the valve-casing. In this Waythe effects of vibration are destroyed 4and the screw-cap remains 4inplace With but little, if any, tendencyv to unscrew from the end of thevalve-casing. Preferably` also, I make both the screw-cap and plug-valveof such length that they Will respectively embrace and enter thevalvecasing asubstantial distance, and the taper of both the valve andthat part of the passage which'it enters is comparatively slight. Withthis class of valves as hitherto constructed it has been commonheretofore to construct the coned plug-valve of a height or length toextend beyond the open end of the screw-cap, and in other instances toconstruct the valve shorter or With its end below the end of the casing.Neither of these forms, however, overcomes the tendency of the dustcapto loosen from the causes above mentioned.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is

In a valve of the class described, the combination, with a valve-casinghaving a valveseat, and alball-valve movable Within the casing andarranged to rest on the valve-seat, of a removable dust-capembracing theouter end of the valve-casing and provided inted riorly with aslightly-conical plug-valve entering a substantial distance into acorrespondingly-coned portion of the main passage in the casing,substantiall y as 'shown and for the purpose described..

In testimony whereof I affix my signature in presence ot' two Witnesses.

' ROBERT HONOLD. Witnesses:

AUGUST B. DRAERTZ, N. VAGNER.

